?Powerful Fan and Low Noise?Fan runs at 2550RPM with 276CFM that offers efficient ventilation. Features 3 speed settings (High, Med, Low). Just 45DB noise level, quite operation allows you to sleep well. ?Efficient Air Ventilation?The inner and outer meshes of the carbon filter offer large open area for airflow. Features 2 conversion ways, it can work as intake filter, also can work as exhaust filter. ?Wide Applications?This duct fan helps clean up the air and keep a good flow. Great for hydroponics, grow rooms, greenhouses, basement, garage, kitchen, bathroom,commercial cooling and industrial applications. ?Durable Construction?The ducting is made of 3-layer aluminum foil and steel wire for reinforcement, high temperature resistant and corrosion proof. The length is flexible. 2 Stainless Steel Ducting Clamps included. ?Easy to Install?Fan:10.8’’ x7.4’’ x10.4’’, Carbon filter:6.9’’ x13.2’’. Power: 70W. portable and lightweight, easy to set up.